Detachable conveying-trolley.



R. J. ELLSWORTH.

DETAUHABLE CONVEYING TROLLEY.

APPLIUATION FILED JAN. 24, 1907.

91 1 ,22 1. Patented Feb. 2, 1909.

77277260560 lh/enwr' 3/", flay/km @512 11 0mm Q' ROSS rnLrsWonrn, or ornoaeo, ILLINOIS.

V nn'racnannn GONVEYING-TROLLEY.

Specification of Letters Patent.

" Application filed January 24, 1907. Serial No. sashes.

Patented Feb. a, 1909.

To all whom it may concern: 7

Be it known that 1, Ross J. ELLswon'rn, a

citizen of the United States, residing at Chicago, county of Cook, State of Illinois,

have invented a certain new and useful 1m provement in Detachable Conveying-Troleys, and declare'the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accom panying drawings, which form a part of thisspecification.

My invention relates in general to conveying apparatus and more particularly to trolleys adapted to travel upon overhead tracks while supportingloads.

- the trolley engaging the-track; andFig. 3 a. view similar to Fig. 2showing the trolley It is necessary that. conveying trolleys should securely engage the tracks upon which they travel and at the same timeit is d6".

sirable that they should be capable of being removed from or applied to their supporting tracks at any desired point.

The primary object ofrmy invention'is to provide an improved trolley which may be readily disengaged from or engaged with a su porting track at any point, and which wil be securely retained upon the track when in engagement therewith, whether supporting loads or not.

A further object of my invention is to provide a conveying trolley which willbe simple in construction, inexpensive in manufacture, and efficient in use. p Y 7 My invention may be generally described as comprising two memberspivotally united between their ends, wheels journaled upon the upper ends of the members and adapted to overlie a track, a cam pivoted upon one member below its pivotal connection with the other member and adapted to engage said other member and thereby prevent the upper ends of the members from separating so that the wheels thereon will be retained abovethetrack; va

My invention will be more fully described hereinafter with reference to the accompanying drawings in which the same is illustrated as embodied in a convenient and practical form, and in which. I

Figure 1 is a side elevational view of my improved trolley supported upon a track; Fig. 2 a transverse sectional .view showing disengaged from the track. 1

The same reference characters are used. to designate the same parts in the several figures of the drawing.

-Reference characters two" members pivotally connected intermediate of their ends by any suitable means, as for instanceby a rivet (1 extending through alined holes in over-lappin inwardly extending portions 0, and a o the respective members.

Upon the inner surfaces of the upper ends of the pivotally connected members A and A are .journaled trolley wheels B and B 'Eachof the members A and A is rovided withlaterally projecting brackets and C extending inop osite directions from the bearing of the tro ley wheel. The outer ends of such brackets are provided with bumpers c" and =0 which extend on opposite sides of the trolley wheel to protect the same from contact with thewheels of other trolleys supported upon the same track.

L E designates a track upon which the trolley wheels are adapted to travel. Such track may conveniently be in the form of a channel beam the side flanges e and c of which project upwardly and are engaged by the treads of the trolleywheels. ihe trolley wheels are provided with flanges b and b which extend belowthe outer surfaces of the flanges e and c and thereby securely retain the trolley face of the shou'l er d engaged by the portion D ofthe cam is above the horizontal plane through the'pivotal support of the cam so that any tendency of the trolley wheels to separate will be effectively resisted by the cam interposed between the members below their pivotal point of connection. An inclined surface (1 is provided upon the memher A extending downwardly and outwardly from the shoulder 11 which is engaged by the upper surface of the portion D of the cam whenthe members are swung from the separatedposition shown in Fig. 3 to the closed position shown in. Fig. 2.

A and A designate The portion a of the member A is interposed between two portions a projecting inwardly from the opposite members and is provided with an inclined projection a adapted to engage an inclined surface a on the member A when the members are in the position shown in Fig. 2, thereby limiting the inward movement of the upper ends of the members so that the trolley wheels will not move together closer than is necessary for them to properly engage the underlying track.

The lower portion I) of the cam is provided with a hole through which may extend any suitable means for suspending a load. It will be observed that the construction of the cam is such that the Weight of the load suspended thereby serves to insure the cam being retained in such position as to prevent the relative movement of the two members thereby avoiding any liability of the separation of the trolley w reels.

From the foregoing description it will be observed that I have invented an improved conveying trolley which may be readily engaged with or disengaged from a supporting track at any point and which when in engagement with the track will be efiectively retained thereon.

While I have described more or less precisely the details of construction, I do not wish to be understood as limiting myself thereto, as I contemplate changes in form, the proportion of parts, and the substitution of equivalents, as circumstances may suggest or render expedient without departing from the spitit of my invention.

Having now fully described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In a conveying trolley, the combination with two members pivotally connected intermediate of their ends, of wheels journaled upon the upper ends of said members, a device movably mounted upon the lower end of one of said members for supporting a load and a shoulder 011 said device for engaging with the lower end of the other member when said device is in load-supporting position so as to hold the lower ends of said mem bers apart.

2. In a conveying trolley, the combination with two members pivotally connected intermediate of their ends, of wheels journaled upon the upper ends of said members, and a cam mounted upon one of said members and adapted to engage the other memher to lock said members in position to retain said wheels in engagement with a supporting track.

3. In a conveying trolley, the combination with two members pivotally connected below their upper ends, of wheels journaled upon said members adjacent their upper ends, a cam pivotally secured to one of said members below its pivotal connection with said other member, and a step on said other member adapted to be engaged. by said cam to lock said members in position to retain said wheels in engagement v. ith a supporting track.

4. In a conveying trolley, the combination with two members pivotally united below their upper ends, of wheels journaled upon the inner surfaces of said members adjacent their upper ends, a locking device interposed between said members below their point of pivotal connection and adapted to retain said members in position for said wneels to overlie a supporting track.

5. In a conveying trolley, the combination with two members pivotally united below their upper ends, of wheels journaled upon the inner surfaces of said members adjacent their upper ends, a locking device interposed between said members below their point of pivotal connection and adapted to retain said members in position for said wheels to overlie a supporting track, and means for supporting a load by said locking device.

6. The combination with a supporting track comprising upwardly extending side flanges, of a trolley adapted to detachably engage said track comprising two relatively movable members and trolley wheels journaled upon the upper ends of said members, the treads of said trolley wheels adapted to travel upon the side flanges of said track, and flanges on said trolley wheels overlying the outer surfaces of said flanges.

In testimony whereof, I sign this specification in the presence of two witnesses.

ROSS J. ELLSWORTII.

Witnesses GEO. L. VVILKINSON, HARRY S. Gnrrrmn. 

